125 lines
4.6 KiB
Swift
125 lines
4.6 KiB
Swift
//
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// ModalDialogViewController.swift
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// VDS
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//
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// Created by Kanamarlapudi, Vasavi on 09/09/24.
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//
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import Foundation
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import UIKit
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import Combine
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import VDSCoreTokens
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@objcMembers
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@objc(VDSModalDialogViewController)
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open class ModalDialogViewController: UIViewController, Surfaceable {
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/// Set of Subscribers for any Publishers for this Control.
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open var subscribers = Set<AnyCancellable>()
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//--------------------------------------------------
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// MARK: - Private Properties
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//--------------------------------------------------
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private var onClickSubscriber: AnyCancellable? {
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willSet {
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if let onClickSubscriber {
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onClickSubscriber.cancel()
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}
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}
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}
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private let modalDialog = ModalDialog()
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//--------------------------------------------------
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// MARK: - Public Properties
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//--------------------------------------------------
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/// Current Surface and this is used to pass down to child objects that implement Surfacable
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open var surface: Surface = .light { didSet { updateView() }}
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open var modalModel = Modal.ModalModel() { didSet { updateView() }}
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open var presenter: UIView? { didSet { updateView() }}
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//--------------------------------------------------
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// MARK: - Configuration
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//--------------------------------------------------
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private let backgroundColorConfiguration = SurfaceColorConfiguration(VDSColor.paletteBlack, VDSColor.paletteWhite)
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//--------------------------------------------------
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// MARK: - Lifecycle
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//--------------------------------------------------
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open override func viewDidLoad() {
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super.viewDidLoad()
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isModalInPresentation = true
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setup()
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}
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open override func viewDidAppear(_ animated: Bool) {
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super.viewDidAppear(animated)
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UIAccessibility.post(notification: .screenChanged, argument: modalDialog)
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}
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private func dismiss() {
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dismiss(animated: true) { [weak self] in
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guard let self, let presenter else { return }
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UIAccessibility.post(notification: .layoutChanged, argument: presenter)
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}
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}
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open func setup() {
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view.accessibilityElements = [modalDialog]
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//left-right swipe
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view.publisher(for: UISwipeGestureRecognizer().with{ $0.direction = .right })
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.sink { [weak self] swipe in
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guard let self, !UIAccessibility.isVoiceOverRunning else { return }
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self.dismiss()
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}.store(in: &subscribers)
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//tapping in background
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view.publisher(for: UITapGestureRecognizer().with{ $0.numberOfTapsRequired = 1 })
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.sink { [weak self] swipe in
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guard let self, !UIAccessibility.isVoiceOverRunning else { return }
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self.dismiss()
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}.store(in: &subscribers)
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//clicking button
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onClickSubscriber = modalDialog.closeCrossButton.publisher(for: .touchUpInside)
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.sink {[weak self] button in
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guard let self else { return }
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self.dismiss()
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}
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view.addSubview(modalDialog)
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}
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/// Used to make changes to the View based off a change events or from local properties.
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open func updateView() {
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modalDialog.surface = surface
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modalDialog.modalModel = modalModel
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// Activate constraints
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modalDialog.removeConstraints()
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let isFullScreen = UIDevice.isIPad && !modalModel.fullScreenDialog ? false : true
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if isFullScreen {
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view.backgroundColor = modalDialog.backgroundColor
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modalDialog
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.pinLeading()
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.pinTrailing()
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modalDialog.pinTop(anchor: UIDevice.isIPad ? view.safeAreaLayoutGuide.topAnchor : view.topAnchor)
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modalDialog.pinBottom(UIDevice.isIPad ? view.bottomAnchor : view.safeAreaLayoutGuide.bottomAnchor)
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} else {
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view.backgroundColor = backgroundColorConfiguration.getColor(self).withAlphaComponent(0.8)
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NSLayoutConstraint.activate([
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// Constraints for the floating modal view for Tablet.
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modalDialog.centerXAnchor.constraint(equalTo: view.centerXAnchor),
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modalDialog.centerYAnchor.constraint(equalTo: view.centerYAnchor),
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modalDialog.widthAnchor.constraint(equalTo: view.widthAnchor, multiplier: 0.7),
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modalDialog.heightAnchor.constraint(equalTo: view.heightAnchor, multiplier: 0.7)
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])
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}
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}
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}
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